diff --git a/src/proto/vim9class.pro b/src/proto/vim9class.pro
new file mode 100644
index 0000000..4e55178
--- /dev/null
+++ b/src/proto/vim9class.pro
@@ -0,0 +1,6 @@
+/* vim9class.c */
+void ex_class(exarg_T *eap);
+void ex_interface(exarg_T *eap);
+void ex_enum(exarg_T *eap);
+void ex_type(exarg_T *eap);
+/* vim: set ft=c : */